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    Tytuł:
    Reconstruction of ice sheet movement from the orientation of glacial morpholineaments (crevasse landforms) : an example from northeastern Poland
    Autorzy:
    Morawski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059698.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    NE Poland
    Pleistocene palaeogeography
    glacial morpholineaments
    crevasse landforms
    glacial crevasses
    ice flow direction
    Opis:
    Analysis of the orientation of both positive and negative glacial morpholineaments (crevasse landforms) was performed on the areas coveredby 12 selectedmap sheets of the Detailed Geological Map of Poland, scale 1:50 000, situated in NE Poland. Axes of these landforms formanet composed of four conjugate sets. This isaclassicaljointnet developeddue to horizontal stress, and composed of an orthogonal (extensional) system consisting of longitudinal and transversal sets, and a rhomboidal (shear) system consisting of two diagonal sets. Based on the orientation of glacial morpholineaments, inherited after the originaljoint net in the ice body, ice sheet advance directions - averaged for the area - were determined. This method of reconstructing ice flow direction creates new possibilities of making synthetic regional analyses, in particular in terms of Pleistocene palaeogeographic investigations. The best potential for the method’suse lies in areas of young post-glacial relief. In the region of NE Poland analyzed, these investigations enabled determination of different directions of ice flow within the Mazurian, Warmian and Vistulian ice sheet lobes of the last glaciation. Local changes in ice sheet movement directions were identified, and these reflected basement elevations (e.g. the Wiżajny Elevation). In other cases, basement irregularities influenced the opening of separate crevasse sets (e.g. outside of the Góra Dylewska massif) giving rise to a dominance of individual directions (sets) in the morpholineament orientation. This method can also be used in geological mapping.
    Źródło:
    Geological Quarterly; 2005, 49, 4; 403--416
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Główne problemy stratygrafii i paleogeografii plejstocenu w pracach Profesora Stefana Zbigniewa Różyckiego i jego uczniów
    The main problems of Pleistocene stratigraphy and palaeogeography in the works of Professor Stefan Zbigniew Różycki and his students
    Autorzy:
    Lindner, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063312.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Różycki Stefan Zbigniew
    zlodowacenia i interglacjały
    jednostki klimatostratygraficzne plejstocenu
    plejstoceńskie cykle sedymentacyjne
    plejstoceńska paleogeografia obszaru Polski
    geneza i warunki akumulacji lessu
    glaciations and interglacial
    climatostratigrahic units of the Pleistocene
    Pleistocene sedimentary cycles
    Pleistocene palaeogeography of Poland
    loess origin and accumulation conditions
    Opis:
    W pracy przedstawiono pięć głównych problemów badawczych dotyczących stratygrafii i paleogeografii plejstocenu podjętych przez Profesora Stefana Zbigniewa Różyckiego. Są to zagadnienia dotyczące: najstarszego zlodowacenia i najstarszego interglacjału, cyklów sedymentacyjnych i przedstawionego na ich podstawie podziału interglacjału wielkiego, identyfikacji i określenia rangi jednostek podziału klimatostratygraficznego plejstocenu, prezentacji paleogeografii obszaru Polski w plejstocenie oraz genezy i warunków akumulacji lessu. Wszystkie te problemy, mimo że zostały sformułowane i zainicjowane przed laty, również obecnie mieszczą się w centrum zainteresowań badawczych i jako takie znajdują swój wyraz w dokonaniach badawczych uczniów Profesora.
    The paper presents the five main scientific issues on the stratigraphy and palaeogeography of the Pleistocene undertaken by Professor Stefan Zbigniew Różycki. The first is linked with the oldest glacian and oldest interglacial, and the second - with the sedimentary cycles and the sub-division of the Great Interglacial based on them. The third problem is focused on the identification and range of the climatostratigraphic units of the Pleistocene and the forth - on presenting the palaeogeographic evolution of the area of Poland during the Pleistocene. The fifth issue discussed herein is connected with the origin and conditions of loess accumulation. All issues, despite the fact that they had been expressed and initiated many years ago, are still the subject of scientific interest and as such are reflected in the scientific achievements of the Professor's students and disciples.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2006, 419; 37-64
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stratigraphy and palaeoceanography of late Pleistocene molluscs from the northern coast of the Persian Gulf
    Autorzy:
    Gholamalian, Hossein
    Hassani, Mohammad-Javad
    Keshavarz, Musa
    Powiązania:
    https://bibliotekanauki.pl/articles/2185978.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Pleistocene
    Persian Gulf
    Dayyer section
    molluscs
    palaeogeography
    Opis:
    We report an extraordinary discovery of marine Pleistocene strata from the north of the Persian Gulf. The Dayyer section contains a rich molluscan fauna including 26 bivalve species, Sr87/Sr86 data showing that the succession is not older than 153 ka (late Pleistocene). These strata are time-equivalents of the Bakhtiari Formation, but have a very different fossil content and facies. Comparing the Dayyer molluscan community to the present-day fauna of the Persian Gulf shows that many fossil species are absent in the recent waters. The palaeoceanographic distribution of the identified bivalves shows the presence of many of them in the Plio-Pleistocene strata of the Mediterranean Basin. This may point to a temporary connection between the Persian Gulf and Mediterranean Basin during the late Pleistocene and the extinction of many bivalves in the past 153 ka
    Źródło:
    Geological Quarterly; 2022, 66, 2; art. no. 17
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stratigraphic interpretation of loess in the marginal zone of the Dnieper I ice sheet and the evolution of its landscape after deglaciation (Dnieper Upland, Ukraine)
    Autorzy:
    Komar, M.
    Łanczont, M.
    Fedorowicz, S.
    Gozhik, P.
    Mroczek, P.
    Bogucki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060425.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    loess
    palaeosol
    Dnieper
    Pleistocene
    palaeogeography
    palynology
    luminescence dating
    Opis:
    Litho-, pedo- and palynological analyses constrained by radiometric dating of two loess-palaeosol sequences, Nahirne and Velyka Andrusivka, exposed in a cliff at the eastern edge of the Dnieper Upland, Ukraine, document regional environmental changes in the western marginal zone of the Dnieper lobe. The postglacial loess sedimentation cycle was initiated during MIS 8, immediately after the ice sheet recession. On the basis of palaeorelief analysis, subsequent morphogenetic stages of the original postglacial relief, associated with the modifying and masking role of the loess, and destructive slope processes were reconstructed. Periglacial steppe with consistently present scattered trees formed the Pleistocene landscape in the Middle Dniester area during the last three glacial periods. In such an environment, the following loess beds, correlated with marine isotope stages (MIS), were deposited: Dnieper (dn) - MIS 8, Tyasmyn (ts) - MIS 6, Uday (ud) - MIS 4 and Bug (bg) - MIS 2. During the last two warm periods: Kaydaky (kd) - MIS 7 and Pryluky (pl) - MIS 5, the landscape was not fully forested. As a result, the individual palynological features of these soils show a diverse character. The TL and OSL dates form a sequence with numerous inversions that are difficult to interpret. Although these data do not significantly influence the interpretation, they show that: 1) there are loesses that undoubtedly formed after the maximum extent of the ice sheet by short-distance transport of dust material from local fresh glacial deposits and the underlying Paleogene rocks; 2) date distortions result from the activities of an exceptionally rich pedofauna that has contaminated the material not only in the soil sections of the profile but also in the adjacent loess. It is possible to delimit a few stages of pedofaunal activity in each of the soil units.
    Źródło:
    Geological Quarterly; 2018, 62, 3; 536--552
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of geoelectrical profiling in the delineation of shallow periglacial structureson the Drohiczyn Plateau
    Autorzy:
    Mieszkowski, Radosław
    Dzierżek, Jan
    Stańczuk, Dominik
    Powiązania:
    https://bibliotekanauki.pl/articles/2027251.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    eastern Poland
    Pleistocene
    periglacial structures
    palaeogeography
    geoelectrical pro filing
    Opis:
    The pa per de scribes the re sults of geoelectrical sound ing ap pli ca tion for the de lin ea tion of periglacial struc tures in Wierzchuca Nagórna within the Drohiczyn Pla teau (east ern Po land). The method re cords the vari a tion of ap par ent re - sis tiv ity of de pos its along a se lected hor i zon tal di rec tion. The sur vey uti lizes a dis tinct geoelectrical con trast be tween gla cial till and struc tures com posed of sand that have been rec og nized ear lier in the gravel pit wall. The stud ies have been con ducted in di rect hin ter land of the gravel pit. Rect an gu lar and con cen tric ar rays were ap plied in the sur vey. The re sults have been pre sented as graphs and re sis tance dis tri bu tion maps. The ob tained geo log i cal im age is not complete, al though it shows an ori ented course of the larg est lin ea ments and traces of a net work with a small mesh size (1.5–2 m). The rec og nized pat tern of struc tures points to harsh cli ma tic con di tions dur ing their for ma tion. Gen eral ori - en ta tion of the struc tures cor re sponds to the ba sic el e ments of the con tem po rary land scape in the area (slope, val ley axes). Geoelectrical sound ing us ing the rect an gu lar ar ray gave better re sults than in the con cen tric ar ray, whereas in - tro duc tion of brine into the sys tem did not en hance the res o lu tion of the read ings. The pre sented re sis tance dis tri bu tion maps with a char ac ter is tic rhythm of vari a tions may serve as a bench mark for rec og niz ing periglacial struc tures in areas with out ex po sures.
    Źródło:
    Studia Quaternaria; 2014, 31; 73-81
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Record and palaeogeographical implications of Pleistocene periglacial processes in the Drohiczyn Plateau, Podlasie Lowland (Eastern Poland)
    Autorzy:
    Dzierżek, J.
    Stańczuk, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058927.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Podlasie Lowland
    palaeogeography
    Pleistocene
    periglacial processes
    ice-wedge casts
    Opis:
    The paper describes 51 ice-wedge casts from Wierzchuca Nagórna village near Drohiczyn town in the Podlasie Lowland in Eastern Poland. The structures are preserved in a till of theWartanian Glaciation. In the exposure the mean distance between them is 1.7 m; their mean length is 1 m, and their width ranges within 0.2–0.5 m. Most of the structures are typically wedge-shaped, although in some cases less regular pockets or veins are also observed. Some of the casts display a complex origin. They are filledmostly by fine-grained sand, in the lower parts with wind-corroded grains, as well as by sand with gravel from the overlying deposits. Near the ice-wedge casts, traces of frost swelling, uplift and sorting in permafrost conditions, as well as of an active layer are preserved. The thickness of the permafrost active layer, as preserved, is about 0.5–0.7 m. The formation of ice-wedges reflects periglacial conditions during the Vistulian (Weichselian) Glaciation. Three palaeogeographical alternatives are discussed. Probably, the lack of traces of periglacial activity from the Wartanian Glaciation is a result of plateau denudation. The range of this denudation has also been estimated.
    Źródło:
    Geological Quarterly; 2006, 50, 2; 219-228
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Differences in the regional stratigraphy of NE Poland caused by vertical movements due to glacioisostasy
    Autorzy:
    Morawski, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/94406.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    neotectonics
    Polska
    Pleistocene
    stratigraphy
    palaeogeography
    glacioisostasy
    neotektonika
    Polska
    plejstocen
    stratygrafia
    paleogeografia
    glaciizostazja
    Opis:
    Geological mapping in combination with geophysical investigations and borehole analyses show differences of the Pleistocene between the Warmia and Mazury palaeogeographic provinces in NE Poland. The (more western) Warmia province has a crystalline basement that is covered by a folded sedimentary succession of 2-4 km thick. The (more eastern) Mazury province (eastern) has a basement that forms part of the rigid East European crystalline craton, which is covered by a sedimentary cover of only 1-1.5 km thick. Cyclic loading by the Pleistocene ice sheets in this area induced glacioisostatic processes of different intensities, resulting in changing palaeogeographic conditions. The changes were increased by intense neotectonic activity that was induced by the ice sheets in the intermediate zone between the two provinces, stretching along the western slope of the crystalline craton. Significant part of intermediate zone forms a belt of crevasse-infill landforms deposited between the Warmia and Mazury lobes of the last glaciation. Studied deposits reveal a cyclic reactivation of the interlobe zone during the successive Pleistocene glaciations. Considerable variations of the relief of the top-Neogene, vertical discontinuities cutting the Pleistocene and Neogene, stratigraphic gaps within the Pleistocene succession, and thick glaciolacustrine successions result from the vertical neotectonic movements in the intermediate area between the two provinces.
    Źródło:
    Geologos; 2009, 15, No. 3-4; 235-250
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stan wiedzy o późnym vistulianie w regionie łódzkim
    State of knowledge about the Late Vistulian (Weichselian late glacial) in the Łódź Region)
    Autorzy:
    Dzieduszyńska, Danuta
    Powiązania:
    https://bibliotekanauki.pl/articles/578371.pdf
    Data publikacji:
    2013
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    schyłek plejstocenu
    środowiska morfogenetyczne
    paleogeografia
    chronostratygrafia
    denudacja
    agradacja
    Pleistocene decline
    morphogenetic environments
    palaeogeography
    chronostratigraphy
    denudation
    aggradation
    Opis:
    Artykuł przedstawia stan rozpoznania paleogeograficznego późnego vistulianu w regionie łódzkim. Dla środowisk sedy-mentacyjnych: fluwialnego, stokowego i eolicznego, wyróżniono tendencje przebiegu agradacji i degradacji oraz scharakte-ryzowano zachowane dowody geologiczne i morfologiczne. Procesy morfogenetyczne zostały odniesione do globalnych, szybkich zmian klimatycznych okresu przejściowego plejstocen-holocen i zróżnicowanych warunków lokalnych. Zwrócono uwagę na niejednolitość stosowania terminu „późny vistulian”, zależnie od podziału stratygraficznego bądź dla obszarów glacjalnych, bądź ekstraglacjalnych. Podkreślono postęp, jaki dokonał się w rejestracji świadectw późnego vistulianu. W kontekście przyrastającej ilości danych z badań interdyscyplinarnych rysuje się możliwość konstrukcji regionalnego mo-delu rozwoju środowiska.
    The article presents the palaeogeographical recognition of the Late Vistulian in the Łódź Region. For three sedi-mentary environments – fluvial, slope and aeolian – tendencies of aggradation and degradation have been identified and preserved geological and morphological evidences have been characterized. Morphogenetic processes have been related to global climatic changes of the Pleistocene-Holocene transition and varying local conditions. Attention was drawn to non-uniformity in the application of the term “Late Vistulian”, depending on the stratigraphical division, or to glacial or extragla-cial areas. The progress that has been made in the registration of the Late Vistulian processes is emphasized. In view of the increasing data of interdisciplinary research, the construction of a regional model for the environmental development is pos-sible in the nearest future.
    Źródło:
    Acta Geographica Lodziensia; 2013, 101; 25-36
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The maximum ice sheet extent and its retreat in the western part of the Holy Cross Mountains, Poland, during the Sanian 2 Glaciation/MIS 12 based on geological data and analysis of karst phenomena
    Autorzy:
    Dzierżek, Jan
    Lindner, Leszek
    Cabalski, Krzysztof
    Urban, Jan
    Cyglicki, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/1835599.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Central Poland
    glacial deposits
    cave deposits
    palaeogeography
    Middle Pleistocene
    Polska środkowa
    osad glacjalny
    złoże jaskiniowe
    paleogeografia
    środkowy plejstocen
    Opis:
    The paper is focused on the palaeographic development of the western part of the Holy Cross Mountains, Poland, during the maximum extent of the Sanian 2 (MIS 12) ice sheet and its retreat. The studies were based on archival cartographic data, coupled with new lithological and petrographic analyses of limni- and fluvioglacial sands, i.e., grain-size composition, quartz grain morphology and heavy mineral analysis, as well as analysis of the erratic material of tills. The results confirm the regional variability of the erratic material in the Sanian 2 tills and point to the long-term development of fluvioglacial sands cover documenting cold climate conditions. They also evidence that the western part of the Holy Cross Mountains was the area where two oppositely directed ice sheet lobes (Radoszyce and Sandomierz) advanced during the Sanian 2 Glaciation and that deglaciation of the area took place in two stages. Huge quantities of meltwater released at that time contributed to the intensification of earlier initiated karst phenomena, as well as filling of the existing caves by fluvioglacial sands.
    Źródło:
    Acta Geologica Polonica; 2021, 71, 2; 199-218
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Warmińska prowincja paleogeograficzna plejstocenu (północno-wschodnia Polska)
    The Warmia Palaeogeographic Province of the Pleistocene (north–eastern Poland)
    Autorzy:
    Morawski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074336.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    plejstocen
    palaeografia
    stratygrafia
    glacitektonika
    morfolineament polodowcowy
    prowincja paleogeograficzna
    geofizyka
    Warmia
    Pleistocene
    palaeogeography
    stratigraphy
    glaciotectonic structures
    glacial morpholineaments
    ice-sheet movement
    geophysical methods
    NE Poland
    Opis:
    The historic area of Warmia (western part of NE Poland) can be considered as a separate geological unit. In particular it applies to its Pleistocene sedimentary complex with a very limited occurrence of morainic deposits, commonly forming discontinuous horizons. Intermorainic deposits predominate, including mainly ice-dam lake deposits which occur at different levels. The sub-Pleistocene relief variations reach up to 400 m, with glaciotectonic upthrustings of Neogene deposits extending to the topographic surface. The province area coincides with the Warmia ice-sheet lobe of the last glaciation (Main Stadial of the Vistulian Glaciation). The eastern boundary of the area is represented by an interlobe zone coincident with the western slope of the Mazury–Suwałki Anteclise. The boundary is a tectonic discontinuity zone extending down to the crystalline basement. The eastern, anteclise area was stable during the Pleistocene, while the area of Warmia (Peri-Baltic Syneclise) was unstable mainly due to cyclic ice-sheet loads which resulted in subsidence in the Warmia region. It, in turn, caused a bending of the ice sheet body, movement acceleration and a change in ice flow direction in Warmia. During interglacials, relaxation uplifting movements triggered stronger erosional processes. These movements were dependent on surface relief, stimulating the formation of deeply rooted glaciotectonic structures.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 6; 477--488
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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